| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 71 |
| Registration plate issues | 64 |
| Headlamp aim out of alignment | 38 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 27 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Registration plate lamp issues | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |